EP 2290699 B1 20181121 - Inverted metamorphic solar cell with via for backside contacts
Title (en)
Inverted metamorphic solar cell with via for backside contacts
Title (de)
Umgekehrte metamorphe Solarzelle mit Bohrung für Rückseitenverbindungen
Title (fr)
Cellule solaire métamorphique inversée dotée de voies pour des contacts en face arrière
Publication
Application
Priority
- EP 07020333 A 20071017
- US 70174107 A 20070202
Abstract (en)
[origin: EP1953828A1] A method of forming a multijunction solar cell including an upper subcell, a middle subcell, and a lower subcell by providing a first substrate for the epitaxial growth of semiconductor material; forming a first solar subcell on the substrate having a first band gap; forming a second solar subcell over the first subcell having a second band gap smaller than the first band gap; forming a grading interlayer over the second subcell having a third band gap larger than the second band gap; forming a third solar subcell having a fourth band gap smaller than the second band gap such that the third subcell is lattice mis-matched with respect to the second subcell; and etching a via from the top of the third subcell to the substrate to enable both anode and cathode contacts to be placed on the backside of the solar cell.
IPC 8 full level
H01L 31/0224 (2006.01); H01L 21/302 (2006.01); H01L 21/461 (2006.01); H01L 31/072 (2012.01)
CPC (source: EP US)
H01L 31/022425 (2013.01 - EP US); H01L 31/03529 (2013.01 - EP US); H01L 31/06875 (2013.01 - EP US); Y02E 10/544 (2013.01 - EP US); Y02P 70/50 (2015.11 - EP US)
Citation (examination)
- COOLEY W T ET AL: "PHOTOVOLTAIC ARRAY SPACE POWER FLIGHT EXPERIMENT PLUS DIAGNOSTICS (PASP+) MODULES", AEROSPACE POWER. SAN DIEGO, AUG 3 - 7, 1992; [PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (IECEC)], NEW YORK, IEEE, US, vol. 1, 3 August 1992 (1992-08-03), pages 1.295 - 1.301, XP000366026, ISBN: 978-0-7803-0693-6
- YOO H ET AL: "Development of coplanar back contact for large area, thin, GaAs/Ge solar cells", PROCEEDINGS OF THE PHOTOVOLTAIC SPECIALISTS CONFERENCE. LAS VEGAS, OCT. 7 - 11, 19; [PROCEEDINGS OF THE PHOTOVOLTAIC SPECIALISTS CONFERENCE], NEW YORK, IEEE, US, vol. CONF. 22, 7 October 1991 (1991-10-07), pages 1463 - 1468, XP010039150, ISBN: 978-0-87942-636-1, DOI: 10.1109/PVSC.1991.169447
Designated contracting state (EPC)
DE ES FR IT
DOCDB simple family (publication)
EP 1953828 A1 20080806; EP 1953828 B1 20110511; CN 101237007 A 20080806; CN 101237007 B 20110713; EP 2290699 A2 20110302; EP 2290699 A3 20140625; EP 2290699 B1 20181121; JP 2008193089 A 20080821; JP 5512086 B2 20140604; US 2008185038 A1 20080807
DOCDB simple family (application)
EP 07020333 A 20071017; CN 200710302234 A 20071220; EP 10010911 A 20071017; JP 2008022765 A 20080201; US 70174107 A 20070202